(60) باب وَقْتِ رَكْعَتَىِ الْفَجْرِ وَذِكْرِ الاِخْتِلاَفِ عَلَى نَافِعٍ
It was narrated from Ibn Umar, from Hafsah, that:
When the call to Subh prayer was given, the Messenger of Allah (ﷺ) would pray two brief rak'ahs before going to pray. (ES)
Reference (ES): Sunan an-Nasa'i 1777 (ES)
In-book reference (ES): Book 20, Hadith 180 (ES)
English translation (ES): Vol. 2, Book 20, Hadith 1778 (ES)